Classification of the genus Ianthinopsis
G. †Ianthinopsis Meek and Worthen 1866
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†Ianthinopsis conspicua de Koninck 1881
†Ianthinopsis medialis Meek and Worthen 1860
†Ianthinopsis melanoides Whitfield 1882
†Ianthinopsis oviformis Reed 1944
†Ianthinopsis pinguis Winchell 1863
†Ianthinopsis tumenensis Yin 1932
†Ianthinopsis tumida Meek and Worthen 1861